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Cajun Alfredo Sauce tossed with pasta and garnished with parsley.

Cajun Alfredo Sauce

  • Author: Caoimhe Byrne
  • Prep Time: 5 minutes
  • Cook Time: 10 minutes
  • Total Time: 15 minutes
  • Yield: Makes about 2 1/2 cups of sauce 1x
  • Category: Sauce
  • Cuisine: American

Description

This Cajun Alfredo Sauce is a rich, creamy, and flavorful twist on classic Alfredo. It’s infused with Cajun spices for a touch of heat and zest, making it a perfect sauce for pasta, chicken, shrimp, or vegetables.


Ingredients

Scale

For the Cajun Alfredo Sauce:

  • 1/2 cup (1 stick) unsalted butter
  • 1 1/2 cups heavy cream
  • 2 tablespoons Cajun seasoning (homemade or store-bought, see notes for homemade recipe)
  • 1/2 teaspoon kosher salt (omit if your Cajun seasoning blend already contains salt)
  • 1 3/4 cups freshly grated Parmesan cheese (see notes)
  • Zest of 1 lemon

For the Homemade Cajun Seasoning (Optional):

  • 3 tablespoons smoked paprika
  • 1 tablespoon onion powder
  • 1 tablespoon garlic powder
  • 2 teaspoons kosher salt
  • 1 teaspoon ground white pepper
  • 1 teaspoon ground mustard (dry mustard powder)
  • 1 teaspoon dried oregano
  • 1 teaspoon dried thyme
  • 1 teaspoon cayenne pepper (adjust to your spice preference)
  • 1/2 teaspoon dried basil

Instructions

  • Melt Butter: Melt the butter in a large skillet over low heat. Cook until the butter is melted and begins to froth (small white bubbles appear on the surface).
  • Add Cream and Seasoning: Stir in the heavy cream and Cajun seasoning. If your Cajun seasoning blend does not contain salt, add 1/2 teaspoon of kosher salt.
  • Simmer: Bring the mixture to a gentle simmer. Cook over low heat for 5-6 minutes, stirring occasionally. Do not boil.
  • Add Lemon Zest: Remove the skillet from the heat. Stir in the lemon zest.
  • Add Parmesan Cheese: Gradually add the freshly grated Parmesan cheese, stirring constantly until the cheese is completely melted and the sauce is smooth.
  • Season to Taste: Taste the sauce and add more salt, if needed.
  • Serve: Toss the Cajun Alfredo sauce immediately with cooked pasta, or serve it over grilled chicken, shrimp, or vegetables.

Notes

  • Cajun Seasoning: You can use store-bought Cajun seasoning or make your own. If making your own, combine all the ingredients for the Homemade Cajun Seasoning in a small bowl and mix well. Store any leftover seasoning in an airtight container.
  • Parmesan Cheese: Use freshly grated Parmesan cheese for the best flavor and melting quality. Pre-grated Parmesan cheese often contains cellulose, which can prevent it from melting smoothly. Do not use the powdery “Parmesan” from a can.
  • Heat Level: Adjust the amount of cayenne pepper in the homemade Cajun seasoning to control the spiciness of the sauce.
  • Consistency: If the sauce is too thick, add a little more heavy cream or a splash of pasta cooking water to thin it out.
  • Serving Suggestions: Add cook proteins